BTreeSetKey Class

Represents a collection of objects that is maintained in sorted order. A persistent BTree references its contained objects by Oid instead of direct object references. This way, we will only open the referenced objects on demand which reduces memory usage and initial BTree load time.

Inheritance Hierarchy

SystemObject
  VelocityDbOptimizedPersistable
    VelocityDb.Collection.BTreeBTreeNode
      VelocityDb.Collection.BTreeBTreeBaseKey, Key
        VelocityDb.Collection.BTreeBTreeSetKey

Namespace: VelocityDb.Collection.BTree
Assembly: VelocityDb (in VelocityDb.dll) Version: 11.1.0.0 (11.1)

Syntax

C++

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[SerializableAttribute]
public class BTreeSet<Key> : BTreeBase<Key, Key>, 
	ISet<Key>, ICollection<Key>, IEnumerable<Key>, IEnumerable

<SerializableAttribute>
Public Class BTreeSet(Of Key)
	Inherits BTreeBase(Of Key, Key)
	Implements ISet(Of Key), ICollection(Of Key), 
	IEnumerable(Of Key), IEnumerable

[SerializableAttribute]
generic<typename Key>
public ref class BTreeSet : public BTreeBase<Key, Key>, 
	ISet<Key>, ICollection<Key>, IEnumerable<Key>, IEnumerable

[<SerializableAttribute>]
type BTreeSet<'Key> =  
    class
        inherit BTreeBase<'Key, 'Key>
        interface ISet<'Key>
        interface ICollection<'Key>
        interface IEnumerable<'Key>
        interface IEnumerable
    end

Type Parameters

Key: The key type of objects in this BTree

The BTreeSetKey type exposes the following members.

Constructors

	Name	Description
	BTreeSetKey	Creates a new BTreeSet

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Properties

	Name	Description
	Comparer	Gets the VelocityDbComparer object that is used to compare Key objects. (Overrides BTreeBaseKey, ValueComparer.)
	UsesOidShort	Does this BTree use short object references (32 bit) for its internal references? NO it does not. (Overrides BTreeBaseKey, ValueUsesOidShort.)

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Methods

	Name	Description
	Clear	Removes all elements from the set. (Overrides BTreeBaseKey, ValueClear.)
	First	Returns the first Key object in this set.
	InitializeAfterRead	(Overrides BTreeBaseKey, ValueInitializeAfterRead(SessionBase).)
	Iterator	Initializes an iterator to find the keys of this set (Overrides BTreeBaseKey, ValueIterator.)
	Last	Returns the last Key object in this set.

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Extension Methods

	Name	Description
	ToStringDetails(SessionBase, Boolean)	Overloaded. Object details as a string (Defined by Utilities.)
	ToStringDetails(Schema, TypeVersion, Boolean)	Overloaded. Currently only used by Database Manager (Defined by Utilities.)

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Reference

VelocityDb.Collection.BTree Namespace

BTreeSetAddLanguageSpecificTextSet("LSTCDB4AD08_0?cs=&lt;|vb=(Of |cpp=&lt;|fs=&lt;'|nu=(");KeyAddLanguageSpecificTextSet("LSTCDB4AD08_1?cs=&gt;|vb=)|cpp=&gt;|fs=&gt;|nu=)"); Class

Type Parameters

Reference

BTreeSetKey Class